Able to make the switch from cold to hot weather, the Marmot Atom Reg Sleeping Bag offers ideal sleeping conditions no matter what time of year it is. Perfect for extreme climbs and casual weekend getaways, the Atom Reg is stuffed with certified 850+ fill goose down, giving it an excellent weight to warmth ratio. Designed with a classic trapezoidal foot box for more foot room, this Marmot sleeping bag’s insulated draft tube eliminates pesky cold leaks from the zipper that tend to disturb your beauty rest. Other features include a full-length zipper, hood draw cord, stretch tricot baffles at hood and foot box and Velcro-free face muff. Keep toasty for $259. Marmot.